Telephone.



No. 818,898. PATBNTED APR. 24, 19018. 8. P. LBVENBERG.

TELEPHONE.

APPLICATION FILED JAN.16. 1905.

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PATBNTED Am. 24, 190e.

S. P, LEVBNBBRG.

TELEPHONE.

APPLIQATIN FILED JAN.16. 1905.

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@fai/Emma@ rrnn 4sfm'rns* j iAEENT orrion.

SAMUEL P. IJEVENBERG, OF NEW YORK, N. Y

TEL'ePHoNi-:-

Specification of vLetters Patent.

- Patented April 24, 1906.

Application filed Janary 16, 1905. Serial No. 241,177.

'.,To all whom ima/y cori/cern:v

Be it known that I, SAMUEL P. LEVEN- BERGJesidin'g at New York, in the county of .New -York and State of vNew York, have invented certain newand useful Im rovements in Telephones, of which the fol owing 1s a Y full, clear,'a'nd exact description, such as will enable others skilled in the art to which it appertain's to make and vuse the same; his invention relates to telephony. One of the objects'thereof is to provide an eicient and compact instrument.

Another object is to provide an instrument ofthel labove type wlnch shall permit of a maximum of convenience in use. Y

Another object is to provide a simple portable instrument of the above general type .which'shall amplify'- the 4sound-waves to a maxir'rnun extent without loss in clearness of 7 Other objects will bein art vobvious and -`in artpointedout hereina er. Q hefinvention accordingly consists in the -whichwill be indicated in t clai'nis,"

features 0f construction, combinations of elements,and.arrangement of parts, which will be' ,exemplified in the apparatus herein describedV and the sc'ope of the application of e following -I'ntheaooompanying drawings, wherein is shown 'one :of various p'ossible embodiments of my invention, Fi

re 1 is-a sectional elevation ofthe same; ig. 2 is a similar View, on

v 4'a',l 1 .'en1argec l scale, of a portion of ahorn shown m F 1 3 is a similar view of the same' parts, showing the same in a slightly-different position. Fig. 4 is a sectional view taken substantially onthe line 'at :c of Fig. 2. Fig. 5

' is afview o a piece of netting used in the abov'e embodiment of my invention.

. Similar reference characters refer to similar parts throughout the several views.

In order. to `render clearerv the general nature of m'y invention it may here bev noted that in the use of a telephone instrumentit is often neces sary, particularly during longdistance comrhumcatlon,9n account of the 'sphere of efficient action of an ordij narylreeeivertohold .the same to the ear for La,considerable eriod.v ',f' l `hi's isnt only tiresome, but mv ves'a considerable waste of time. If'it be attemptedto avoid this inconvenience by the'use of a receiver-support, it lsfound that the vsame is clumsy and inefiicient. Also if the receiver is held ina fixed in constructions -of the nature of that herein which may be detac ably secured thereto in any desired manner, as by screws 3. Mounted u on standard 2 are casings 4 and 5, preferab y secured to 011e another by an annular band, as of rubber 6, this band be' position, as by screws- 7. Secure within thereona -microphone-transmitter 9, .which as the same is of well-known construction and forms in itself'no art of the present invention will not be escribed in detail., 1Upon the outer end of casing 4 is an annularring 10,

'casmg 4 is a cross-piece 8, having mounted having an inwardly-projecting shoulder 11 I fitting within the casing; y

.Mouthpiece 12, Whic is' preferably of soft rubber, is provided with a flange 13, resting against the outer surface of ring 10 and. ad-

justabl held in position thereon by means of a co lar 14, secured upon the ring. This mouthpiece its the inner surface of ,ring 10, thus conducting the voice-vibrations substantially without loss against the transmitter 9, and it may be turned at an angle, belng held in the desired position -the frictional engagement of collar 14.l he material used for the construction of this mouthpiece is preferably rubber of such composition as to be adapted to retain thefdesired" shape, being7 aided, if desired, by'a stifeingring in the ace thereof and yet being adapted to be folded against the instrument or purpose of compactness duringtransportation.

' Casing 5 contains a composite magnet -15 providedwith a core 16,v upon Which'is Wound roo a coil 17,.'` Magnet-15 is fixed, as by screws'.

18, within a shell 19,"and--suitable insulatingblocks 20 and 21 are rovided for the purpose hereinafter describe Mountedupon shell 19 is a receivingldiaphragm'2'2, and a hanged orn 24, has a .threaded connection with this i shell. A. lining 25, preferably of soft rubber,-

105 plate 23, formed integral with a receivingis interposed between the casing and the shell 19 and between the plate 23 and an outer cap 26 for tl e purpose of avoiding thetransmission of extraneous vibrations to the dia-- phragm.

The inner opposing ends of casings 4 and 5 are preferably respectively closed by partitions 27 and 28, having therebetween an airspace 29 for the urpose of aiding in the isolation of one of iiliese casings from the other thereof. U on-the side of partition or wall 28 toward t e magnet 15 is a contact-plate 30, connected, as by screw 31, with the framework of transmitter 9. Mounted upon insulating -blocks and 2-1 are contact-springs 32 and 33, adapted in their normal open-circuit ositions to rest against the partition 28, whic is of hard rubber-or other insulating material. YWhen the horn 24, however, is swungup into operative position, 'the shell 19, connected therewith, as above described, is turned within 25, thus throwing contact springs or brushes 32 and 33 upon the plate' vand making an electrical connection etween the same. The several connections and the wiring of the instrument will 'be hereinafter referred to.

Horn 24, which, as above indicated,jis rotatable, together with the magnet 15 andshell 19, with which it ,is connected,v about a substantially horizontal axis, is adapted to. maintaiiian extended or operative position by reason of a sliglhtly-eccentric dis osition of the weight of t e parts within she l 19 with reference-toits axis. AThis receivinghorn is referablymade substantially of the shape s own, bein without sharp turns, so'

as to avoid loss of c earness of sound, and being of -a unformly-increasin diameter, so as to` attain. a maximum amp iiication of the .sound-Waves. The face of the horn is positioned preferably substantially as shown, be-

ing adapted to coact with the ear of the user into mouthpiece 12. By the term -f face as -used throughout this descri tionA and inthe following claims is inten edtheedges of'the open or exposed endsof the vmembers with regardto which it is' used. i.

Referring 2,;it will be seen that the end of horn 24`is provided with an inner lip .34 and that both the inner lip and theouter portion 35 of the horn' are (provided, respectively, witli rings 36 an 37, preferably formed of soft rubber or similar material and adapted to avoid the formation of a gap between the hornl and an earpiece 38, mounted between inner lip 34 and the outer portion of the horn and pivotally connected to the same, as shown at 39. Earpiece 3S is preferably formed of hard rubber and terminates in an' outer ringl 40 of softer. material, so as to render the instrumentmore comfortable in referably seuse. .A piece of netting 41'is the earpiece' 1cured over the outer surface o .the ear in the cramped and lation of the parts'.

is not of the essence of my invention, a description thereof in detail will not be given, it being merely noted that the coil 4.5 and condenser 46 are positioned. within or mounted upon the instrument and thatv the receiver-circuit is closed bv means Yof contact- A springs 32 and 33 and plate 30 when the horn 24 is swung upwardly into operative position.v

It may'here be noted that the expression sound insulating is used throughout this description and the following claims in a ed to interfere with the transmission of sound-waves. j

The method of use of the-above-described embodiment of my invention is substantially as follows: If it be operative position adjacent vthe ear of t e listener, butnot necessarily in contact therewith, as on account of the sound-emplilyingqualities of the horn such position is rendered unnecessary. The swinging of the receiver into this positioncompletes the circuit and may be made to call 'the central officein the well-known manner now in general use. The

vbroad sense as denoting any material adaptdesired to call another party, the receiver is merely swung u into number having Abeen givenit is necessary merely that the horn be allowed to remain in its upturned positionuntil the arty called has responded the calling party being free to perform other work, being required only to remain in the neighborhood of the instrument. When the called party has answered,

the instrument is used in the ordinary maii- IXO ner, excepting that, as above Ipointed out, it is Y to hold t e head against uite Aunnecessa t e horn or to ho d-a receiver in contact with l uncoii ifor-tablel 'ments now in general use. If it is desired 'to position rendered necessary by the' instru.-

prevent ersonsin the neighborhood from.

overbearing the message received, ritrisnecf 1 essary merel to place the ear against the? .earpiece 38,`t e soun `being heard then only by the party for which it is intended. When used-in this manner, the head is not necessa- A i earpiece 38 allows o any desired movement thereof without the escape of sound. en it is"desi red to ring ofi", the horn is merely thrown into its lower osition, whereupon v,

connection is broken wi It will be undesrtood that the mouthpiece out Vfurther inanipul ril `held in a fixed osition, as the ivote'd- Y F P 12is'i1'1-general heldin the desired position, ing member, a casing mounted thereon,` readjustment thereofbeing-unnecessary during the use-of the instrument. It will thus'be-seen that I'have provid e-:l a .simple and efficient instrument which is of inexpensive construction and yet possesses many advantages 1n use, some of whichl have been indicated above. It. will also be seen that by the use of-an instrument made in. ae-

cord ance with the principles of my invention ,not only is there a material gain in time to the user in viewl of former construetiims, bu t the same 1s more comfortable and less conlining and cramping than in thecase of those i instruments which 'do not possess the leatures above indicated. It will also be seen mounted thereon, one of saidv casings co'nthat there are no complicated pieces of mechj. anismusedand that .the instrument is thus dura'bleand not likely to get out of order w n subjected to hard practical use. Also there isla gain not only in the loudness of the soundemltted, but-in clearness, as the smallvoic'ewav'es are ampliedwithoutdistortion. ,I Asumany changes could b'e'made in the above construction and many apparently widely-different embodiments of my inven- 'tion could be made without departing from the scope thereof, I intend that all` matter contained. in the above description or shown in the accompanying drawings shall be inter preted as illustrative andnot in a limiting sense.

I claim-'- Y l 1. In tele bony, in combination, transmitting mec anism, a member mounted adjacent said transmitting mechanism and provided with an opening, a mouthpiece adapt'- ed to fit said opening and provided with a flange 4resting against said member anl an adjustable"collar'adapteti to hold sai-il Harige against 'said member.

2. 'In telephony, in combination receiving lmechanism, a horn mounted in operative position with relation thereto andan earpiece pivotally mounted upon said horn, parts upon said horn extending inside'of and parts surrounding said earpiece.

3. In telephony, in combination, receiving mechanism, a receiving-horn operatively poositioned with reference thereto, an earpiece pivotally mounted upon said horn, parts' upon said horn extending inside of and parts thereon surrounding said earpiece and ilexible bands upon said horn at the points of contact thereof with said earpiece.

4. 'ln telephony, in combination, receiving meehanisnn a rotatable sound-amplifying horn of increasing diameter operativelypositicnedwith referenee'thereto and an earpiece )ivotally mounted upon said horn, said horn being provided with means adapted to permit a relative movement of said earpiece and revent the formation of an opening between itself and the same.

5. lu telephony, in combination, asupport- .mitting mechanism, and a flat band of relatively flexible sound-insulating materialemf bracing' and secured to eachlof said casir'i'gs and connecting them one with another.

[n a portable telephone, in combination, 8o a portablesupporting member, two casings taining transmitting mechanismand the other of said casings containingv receiving mechanism, a horn operatively positioned S5 with reference to said receiving mecha nisin, and a flat band of sound-insulatinfr material embracing and secured to each'oi` said cfisings and .connecting the same one with another. A -i 9o 8. In telephony, in combination, receiving mechanism comprising a diaphragm, transmitting mechanism, a mouthpiece in opera- "tive relation to said transmitting mechanism,

and a sound-amplifying hornvextending directly from said d ia ihragm in an unbroken curve of substantially uniformly-increasing diameter, .the faces of said horn and said mouthpiece being nonparallel with rcfer. ence one t0 another.'

9. In telephony, in combination, receiving mechanism, transmitting mechanism, -a mouthpiece in operative relation to. said transmitting mechanism, and a sound-ampli- IOO :o5 creasing diameter extending from s'ald re.- ceiving mechanism, said'horn comprising an earpiece, the exposed edge portions of whiil are movable with relation to the body of tl'i horn and which is adapted in all operativ( positions to form an even continuation of the general shape of the bctly of the horn.

' 1().` In telephony, in combination, receiving mechanism, transmitting mechanisnuav mouthpiece vrin operative relation 'to said transniittingmechanism, a sound-amplif ing horn extendiigfrom sa id receiving mec anism in an unbroken curve of substantially uniformly increasing. diameter, said horn comprising an earpiece, the e'x osed edge portionsof whichare movable with relation to the body' ofthe horn and which isadaptefd in all operative positions'to forman eve'n continuation ofthe general sha e of the body of the horn, and independent exible means 125 adapted to prevent the formation of a'n'aiigap between said earpiece and the body said horn. Y

11. In telephony, in combination, receivl ing mechanism, transmitting mechanism, a 1;,0

mouthpiece in operative relation. to said' .transmitting mechanism, and a sound-amplifying horn extending from said receiving mechanism in an unbroken curve of substantially uniformly increasing diameter, said horn comprising an earpiece the exposed edge portions of which are movable with relation to the body. ofthe horn and which is adapted in all operative positions to form an even continuation of the general shape of the body of the horn, and means u on said horn adapted to preventthe entry o foreign matter therein.

' 12. In telephony, in combination, receiving mechanism comprising a diapln'agni, transmittin vineclianisi'n, a mouthpiece 'in operative re ation to said transmitting 'mechanism, and a sound-amplifying horn extending directly from said diaphragm in an unbroken vcurve of substantially uniformly increasing diameter, said horn comprisingan earpiece, the ex osed edge portions of which -arenon-paralle with'respect' to the face of said .mouth ieee and are movablewith relation to the ody of said horn and forin in all v operative positions thereof an even continuation of the-general shape lof the body of the horn..

13.` In telephony, in combination, aI portable telephone instrument comprising a suport', receiving and transmitting mechanv isrnsinounted-v upon said support, sound-in-v. sulating .means interposed between `said mechanisms, a soundamplifying horn extending from said receiving mechanism in an unbrokencurve of increasing diameter, .a

mouthpiece in operative lrelation to saidtransmitting. mechanism, said horn being adapted to swing with reference to said support, connecting ineansadaptod to be operated upon saidhorn being swung into operative position, and guiding means adapted to prevent a break in ,the curve of said horn with said horn in operative iosition.

' 14. In' telephony, in com ination, a portable telephone instrument comprising a supporting member, receiving and transmitting. mechanisms mounted upon said supporting siaess member, sound-insulating means between said mechanisms, said receiving mechanism comprising a diaphragm, a mouthpiece in. operative relation to said transmitting mechanism, a-'sound-amplifying horn extending directly from saidd'iaphragin in an .unbroken curve -of substantially' uniformly increasing diameter, said horn being adapted to be swung With relation to said support, connecting means adapted to be operated upon said horn being swung into operative position with the 'face thereof in non-parallel relation to the face of said mouthpiece, andgiding means adapted to prevent a break in thecurved passage'through said horn said horn in operative position.

i5 In telephony, -in combination, a portable telephone instrument comprising a sup-v porting member, receivinr and transmitting mechanisms mounted u oii'said su porting member,- sound-insulating means between said mechanisms, said receivingmechanism operative relation to said transmitting mechdirectly from said diaphragm in an unbroken fcurve, of substantially' uniformly;T increasing '7bcompri'sing a diaphragm, a mouthpiece mj diameter, said horn being adaptedgt be swung With relation to said support, connecting means adapted to be operated uponsaid ,horn being v4swung into -`operative'position vwith the face thereof in nonarallel relation to-jthe face of' s'a'id mout piece, guiding means adapted to prevent a break the `curved passage through said horn with said horn inoperative position, said horn comprising an-ear ieee the edge portions 4of Which'are mova le with relationto the body of the horn and in all operative positions form an even continuation ofthe general shape thereof.

In testimony whereof I'aiix my signature in the presence of two witnesses.

f SAMUEL. P. LEVENBERG.. 

